Patents by Inventor Keiro Muro
Keiro Muro has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20110196955Abstract: In a sensor network system comprising a sensor terminal and a management server, the sensor terminal transmits observation data acquired using the sensor, the management server has a latest data storage manager which manages the latest observation data among observation data received from the sensor terminal, a history data storage manager which manages the history of the observation data from any time when data was received from the sensor terminal to the latest observation data, and a missing data manager which manages missing history data, and compensates the missing history data based on a predetermined rule, and when a request for such observation data is received, at least one of the latest observation data managed by the latest data storage manager, and history data wherein the missing data has been compensated and managed by the history data storage manager, is output according to the type of request.Type: ApplicationFiled: April 19, 2011Publication date: August 11, 2011Applicant: HITACHI, LTD.Inventors: Toshiyuki Odaka, Keiro Muro, Minoru Ogushi, Kei Suzuki, Shoji Suzuki
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Patent number: 7953571Abstract: In a sensor network system comprising a sensor terminal and a management server, the sensor terminal transmits observation data acquired using the sensor, the management server has a latest data storage manager which manages the latest observation data among observation data received from the sensor terminal, a history data storage manager which manages the history of the observation data from any time when data was received from the sensor terminal to the latest observation data, and a missing data manager which manages missing history data, and compensates the missing history data based on a predetermined rule, and when a request for such observation data is received, at least one of the latest observation data managed by the latest data storage manager, and history data wherein the missing data has been compensated and managed by the history data storage manager, is output according to the type of request.Type: GrantFiled: July 31, 2007Date of Patent: May 31, 2011Assignee: Hitachi, Ltd.Inventors: Toshiyuki Odaka, Keiro Muro, Minoru Ogushi, Kei Suzuki, Shoji Suzuki
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Patent number: 7831283Abstract: A plural-data transmission Start message is transmitted prior to transmission of plural data to an intermittent operation type wireless communications terminal, and when transmission of plural data is completed, a plural-data transmission End message is transmitted. The terminal which received the plural-data transmission Start message can change over the sleep period of the aforesaid intermittent operation to a shorter sleep period. Thereby, an improvement in the response performance in the case of plural-data delivery can be simultaneously obtained while maintaining the low power performance of a sensor node.Type: GrantFiled: July 30, 2007Date of Patent: November 9, 2010Assignee: Hitachi, Ltd.Inventors: Minoru Ogushi, Keiro Muro, Toshiyuki Odaka, Kei Suzuki, Shoji Suzuki
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Patent number: 7761561Abstract: A sensor node may be used for another purpose for a moment and may also be replaced. By configuring, for a sensor node, a logic node which is provided with the physical node use information indicating whether or not the sensor node is in use and the logical node use information indicating whether or not the sensor node is provided as a logic node, a sensor node to be replaced may be specified based on the replacement request of the sensor node, a sensor node is selected which is configured as logic node providing the physical node use information indicating that the sensor node is not used and the logic node use information indicating that the sensor node is provided as the logic node, thus selected sensor node is identified as the replacing sensor node to achieve the replacement from the replaced sensor node to the replacing sensor node.Type: GrantFiled: July 13, 2007Date of Patent: July 20, 2010Inventors: Keiro Muro, Toshiyuki Odaka, Minoru Ogushi, Kei Suzuki, Shoji Suzuki, Kazuki Watanabe
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Patent number: 7668684Abstract: In a sensor network system for transferring sensing data measured by a sensor node to a host server based upon a process condition, the process condition can be easily set. The host server (4) previously sets a transmission condition which is used to transmit only an event satisfying a preset condition to the host server (4). When the host server (4) receives a joined event from a PAN management server (2), the host server (4) transmits to the PAN management server (2) a transmission condition corresponding to an identifier of an ID of a sensor node (1) of a transmission source of the joined event, and the PAN management server (2) transfers only an observed event satisfying the transmission condition to the host server (4).Type: GrantFiled: April 30, 2007Date of Patent: February 23, 2010Assignee: Hitachi, Ltd.Inventors: Keiro Muro, Kei Suzuki
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Patent number: 7603263Abstract: It is possible to easily perform the spatial simulation for a large area. Provided is a computer-readable medium recorded with a spatial simulation program for controlling a computer to execute procedures for calculating a time-based change of a variable in a plurality of numerical grids to reproduce on a computer a time-based change of a phenomenon represented by the variable in a space represented by the plurality of numerical grids, the spatial simulation program including the procedures of: defining a sub domain composed of the plurality of numerical grids (201); setting a forcing condition for the sub domain (204); detecting the sub domain including the numerical grid in which the variable changes with time; detecting the sub domain including the numerical grid in which the variable referred to for calculating the time-based change is positioned (205); and updating variables in the numerical grids constituting the detected sub domain (208).Type: GrantFiled: February 17, 2006Date of Patent: October 13, 2009Assignee: Hitachi, Ltd.Inventors: Satoshi Yamaguchi, Keiro Muro, Kazuaki Iwamura
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Publication number: 20090018899Abstract: There is provided a facile sound communication tool that can quickly communicate with a necessary partner when needed. The real-time contexts of users are detected from sensors that are worn by the users, and diverse sensors that are located around the respective users to obtain data. The data is transmitted to a server. A context analyzer of a processor in the server determines the busyness of the respective users on the basis of the data, and a collaboration controller controls a communication between the respective users on the basis of the busyness.Type: ApplicationFiled: February 12, 2008Publication date: January 15, 2009Inventors: Minoru Ogushi, Keiro Muro, Norihiko Moriwaki, Toshiyuki Odaka
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Publication number: 20080307075Abstract: A sensor-Net system includes sensor nodes which are in intermittent operation so as to save power by repeating activated state and inactivated state at a regular interval. Synchronization of time in the system is executed by aligning to the intermittent operation of the sensor nodes. A management server issues a setTime command for configuring the time to each gateway node at a specified interval. Each router node sets or corrects the time of it based on the time received from the gateway node and thereafter turns ON the time configuration flag for each sensor node in order to expand the setTime command to all of its sibling sensor nodes. The router node, upon reception of a polling, which is a command request, from the sensor node, obtains the time at that time, then uses the time to generate a setTime command to transmit to that sensor node.Type: ApplicationFiled: February 11, 2008Publication date: December 11, 2008Inventors: Takehiro Urano, Keiro Muro, Toshiyuki Odaka, Minoru Ogushi, Yoshihiro Wakisaka
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Patent number: 7398164Abstract: The object of the invention is to facilitate the entry of a sensor node and the adoption of a protocol in the existing sensor network system effectively utilizing limited resources of radiocommunication. To achieve the object, the following are provided. A sensor node has a radiocommunication unit that transmits a measured value sensed by a sensor and an identifier of a sensor node as binary measured data. A base station has a radiocommunication controller that receives the measured data from the sensor node, a wire communication controller that transmits the received measured data to a server, a conversion definition information selector that selects conversion definition information corresponding to the identifier included in the measured data out of preset plural conversion definition information and a conversion engine that converts the binary measured data to measured data in a text format based upon the selected conversion definition information.Type: GrantFiled: February 21, 2007Date of Patent: July 8, 2008Assignee: Hitachi, Ltd.Inventors: Munoru Ogushi, Keiro Muro, Hiroyuki Ota
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Publication number: 20080071892Abstract: A sensor node may be used for another purpose for a moment and may also be replaced. By configuring, for a sensor node, a logic node which is provided with the physical node use information indicating whether or not the sensor node is in use and the logical node use information indicating whether or not the sensor node is provided as a logic node, a sensor node to be replaced may be specified based on the replacement request of the sensor node, a sensor node is selected which is configured as logic node providing the physical node use information indicating that the sensor node is not used and the logic node use information indicating that the sensor node is provided as the logic node, thus selected sensor node is identified as the replacing sensor node to achieve the replacement from the replaced sensor node to the replacing sensor node.Type: ApplicationFiled: July 13, 2007Publication date: March 20, 2008Inventors: Keiro Muro, Toshiyuki Odaka, Minoru Ogushi, Kei Suzuki, Shoji Suzuki, Kazuki Watanabe
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Publication number: 20080070614Abstract: A plural-data transmission Start message is transmitted prior to transmission of plural data to an intermittent operation type wireless communications terminal, and when transmission of plural data is completed, a plural-data transmission End message is transmitted. The terminal which received the plural-data transmission Start message can change over the sleep period of the aforesaid intermittent operation to a shorter sleep period. Thereby, an improvement in the response performance in the case of plural-data delivery can be simultaneously obtained while maintaining the low power performance of a sensor node.Type: ApplicationFiled: July 30, 2007Publication date: March 20, 2008Inventors: Minoru Ogushi, Keiro Muro, Toshiyuki Odaka, Kei Suzuki, Shoji Suzuki
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Publication number: 20080068156Abstract: In order to realize the joining with the legitimate devices for joining with a limited number of operations for terminal devices for which small dimension and low power consumption are required, in the radio communication system according to the present invention, a ReJoin Command for instructing the sensor node to join with other PANs is provided, and by the use of this command, it is possible to change the joining of the sensor node joined with an unintended PAN to another intended PAN. In addition, for joining with the PAN to which it is joined is disjoined, repeated attempts are to be made to join with the PAN.Type: ApplicationFiled: July 12, 2007Publication date: March 20, 2008Inventors: Isao Shimokawa, Keiro Muro, Minoru Ogushi, Kazuki Watanabe, Miki Hayakawa
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Publication number: 20080071899Abstract: In a sensor network system comprising a sensor terminal and a management server, the sensor terminal transmits observation data acquired using the sensor, the management server has a latest data storage manager which manages the latest observation data among observation data received from the sensor terminal, a history data storage manager which manages the history of the observation data from any time when data was received from the sensor terminal to the latest observation data, and a missing data manager which manages missing history data, and compensates the missing history data based on a predetermined rule, and when a request for such observation data is received, at least one of the latest observation data managed by the latest data storage manager, and history data wherein the missing data has been compensated and managed by the history data storage manager, is output according to the type of request.Type: ApplicationFiled: July 31, 2007Publication date: March 20, 2008Inventors: Toshiyuki Odaka, Keiro Muro, Minoru Ogushi, Kei Suzuki, Shoji Suzuki
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Publication number: 20080055113Abstract: In a sensor network system for transferring sensing data measured by a sensor node to a host server based upon a process condition, the process condition can be easily set. The host server (4) previously sets a transmission condition which is used to transmit only an event satisfying a preset condition to the host server (4). When the host server (4) receives a joined event from a PAN management server (2), the host server (4) transmits to the PAN management server (2) a transmission condition corresponding to an identifier of an ID of a sensor node (1) of a transmission source of the joined event, and the PAN management server (2) transfers only an observed event satisfying the transmission condition to the host server (4).Type: ApplicationFiled: April 30, 2007Publication date: March 6, 2008Inventors: Keiro Muro, Kei Suzuki
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Publication number: 20080031139Abstract: An overload on a communication path in a sensor network system is prevented while transferring information from a sensor node as close to real time as possible. When the transfer rate of events transferred from a boundary node (DR) toward a gateway (GW) exceeds a limit transfer rate (VL), one of nodes on the sensor node (S) side whose transmission rate meets a preset condition is identified as an excess transmission rate node. The excess transmission rate node, or a node that is not the excess transmission rate node and whose transmission rate should be reduced, is chosen as a deceleration node. A node that reduces the transmission rate of events from the deceleration node, or the transfer rate of the events, is chosen as a deceleration processing executing node. The deceleration processing executing node is instructed to execute preset processing.Type: ApplicationFiled: May 8, 2007Publication date: February 7, 2008Inventors: Keiro Muro, Minoru Ogushi, Kei Suzuki
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Publication number: 20070210916Abstract: The object of the invention is to facilitate the entry of a new type of sensor node and the adoption of a new protocol in the existing sensor network system effectively utilizing limited resources of radiocommunication. To achieve the object, the following are provided. A sensor node has a radiocommunication unit that transmits a measured value sensed by a sensor and an identifier of a sensor node as binary measured data. A base station has a radiocommunication controller that receives the measured data from the sensor node, a wire communication controller that transmits the received measured data to a server, a conversion definition information selector that selects conversion definition information corresponding to the identifier included in the measured data out of preset plural conversion definition information and a conversion engine that converts the binary measured data to measured data in a text format based upon the selected conversion definition information.Type: ApplicationFiled: February 21, 2007Publication date: September 13, 2007Inventors: Munoru Ogushi, Keiro Muro, Hiroyuki Ota
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Publication number: 20070032993Abstract: It is possible to easily perform the spatial simulation for a large area. Provided is a computer-readable medium recorded with a spatial simulation program for controlling a computer to execute procedures for calculating a time-based change of a variable in a plurality of numerical grids to reproduce on a computer a time-based change of a phenomenon represented by the variable in a space represented by the plurality of numerical grids, the spatial simulation program including the procedures of: defining a sub domain composed of the plurality of numerical grids (201); setting a forcing condition for the sub domain (204); detecting the sub domain including the numerical grid in which the variable changes with time; detecting the sub domain including the numerical grid in which the variable referred to for calculating the time-based change is positioned (205); and updating variables in the numerical grids constituting the detected sub domain (208).Type: ApplicationFiled: February 17, 2006Publication date: February 8, 2007Inventors: Satoshi Yamaguchi, Keiro Muro, Kazuaki Iwamura
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Publication number: 20060282498Abstract: An operation flow of each node is dynamically changed according to a user request or a situation. A client (205) includes: a step (415) of extracting a script for a lower node from scripts in which processing is preset for a plurality of nodes to distribute the script extracted to the lower node; a step of executing processing for a self node from the script; a step of causing the lower node to receive the script distributed to execute processing for the node; and a step 410 of causing the lower node to extract a script for a node lower than the self node from the scripts, and to distribute the extracted script to the lower node if the script for the lower node is present. Based on a script executed by each node, an event from a lowest sensor node is sent through an intermediate node to the client 205.Type: ApplicationFiled: August 25, 2005Publication date: December 14, 2006Inventor: Keiro Muro
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Patent number: 7107150Abstract: There have been problems in the facility information management system arts because when a distance-based facility database is searched for the facility information by specifying the name and distance of a facility, the location and position of a specific facility must be found on a figure such as a map. Such a location is not easily pointed out especially when the facility is damaged. To overcome the above problems, the present invention relates the distance-based facility data with map data and allows a generation of graphical figure data to be overlaid on a map from the numerical data corresponding to the facility parameters stored in the distance-based facility data.Type: GrantFiled: November 10, 2003Date of Patent: September 12, 2006Assignee: Hitachi, Ltd.Inventors: Kazuaki Iwamura, Keiro Muro, Shintaro Hatsumoto, Shu Tezuka, Yukio Funyu
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Publication number: 20040111213Abstract: There have been problems in the facility information management system arts because when a distance-based facility database is searched for the facility information by specifying the name and distance of a facility, the location and position of a specific facility must be found on a figure such as a map. Such a location is not easily pointed out especially when the facility is damaged. To overcome the above problems, the present invention relates the distance-based facility data with map data and allows a generation of graphical figure data to be overlaid on a map from the numerical data corresponding to the facility parameters stored in the distance-based facility data.Type: ApplicationFiled: November 10, 2003Publication date: June 10, 2004Inventors: Kazuaki Iwamura, Keiro Muro, Shintaro Hatsumoto, Shu Tezuka, Yukio Funyu